Sewing-machine shuttle



(No Model.)

R. M. ROSE. Sew ing'Maohine Shuttle.

No. 240,338. v Patented April 19,1881.

Wt Eels-E5. I T/E' i131, v T

N-PETER& PHOTO-LITHOGRAPHER. WASHINGTON, D, C.

UNITED STATES PATENT OFFICE.

REUBEN M. ROSE, OF BROOKLYN, NEW YORK, ASSIGNOR TO GOLD MEDAL SEWING MACHINE COMPANY, OF ORANGE, MASSACHUSETTS.

SEWING-MACHINE SHUTTLE.

SPECIFICATION forming part of Letters Patent No. 240,338, dated April 19, 1881. Application filed August 13, 1880. (NomodelJ To all whom it may concern 7 Be it known that I, REUBEN M. Rosa, of Brooklyn, county of Kings, State of New York, have invented an Improvement in Sewing-Machine Shuttles, of which the following description, in connection with the accompanying drawings, is a specification. v

This invention relates to shuttles for sewingmachines; and it consists, essentially, in a bored shuttle shell or body, and a teusion-sprin g and mechanism to adjust it, combined with an independent bobbin-holding spring having a lip to extend just over and below the rear end of the shell to hold the bobbin in place within the said shell. This construction enables a bobbin to be removed and replaced without at all affecting or requiring any adjustment or movement of the tension device.

Figure 1 represents, in longitudinal section, a sewing-machine shuttle and bobbin embodying my invention; Fig. 2, a top view thereof, with the bobbin-holding spring in place; Fig. 3, a similar view, with the shuttle holding spring turned aside preparatory to removing the bobbin; and Figs& and 5 are,respectively, a longitudinal section and top view of 'a modified form of tension device and bobbin-holder on a smaller scale.

The shuttle body or shell a, bored out from its heel toward its point to receive the bobbin b, is as usual.

The tension-spring c has its bent end 0 extended into a hole in the shell, and caught under a bar or narrow piece, c of the shell, while its other bent end, 0, nearest the point of the shuttle is pressed down into a cavity or recess, a (see Fig. 1) in the shuttle-shell. The end 0 of the spring 0 is provided with a screw-hole to receive the tension controlling or adjusting screw 01, which is screwed into the body a. The under side of the head of this screw forces the end 0 of the shuttle-tension spring 0 down into the said cavity more or less, thus increasing or diminishing the pressure of the said spring upon the shuttlethread, which will be passed from the bobbin outward through the long slot, 6, extended along the body a in the direction of its length to and through the extreme heel end of the shell, and thence between the shuttle-shell and spring 0. This spring 0 has connected with it (see Fig. 1, dotted lines) a pin, f, which is extended through a hole in the shuttle-shell. A short distance in advance of this pin, and toward the point of the shuttle, the spring a is bent upward, and the shuttle-shell concaved to afford a space for the easy introduction of the shuttle-thread between the said spring and the shuttle-shell. The normal condition of the spring 0 is somewhat curved, so that werethe screw d removed the said spring would curl or curve upward. So it follows that as the said spring is depressed by the said screw that part of the spring'next in front of the pinftoward the point of the shuttle is caused to approach nearer and nearer to the shuttle-shell, and consequently the said spring will press harder and. harder upon the thread under it.

To obviate disturbing or moving the tensionspring, when removing or replacing a bobbin, I have connected with the said spring 0 an independent bobbin-holding spring, g, and have provided it with a short lip, g, to extend over and just below the shell or wall of the shuttle at its heel, as in Fig. 1,- the end of the lip extending over the heel just far enough to prevent the escape of the bobbin, and yet not so far as to require it to be bent for any considerable distance when it is necessary to move the lip aside to fully uncover the opening at the heel of the shuttle for the removal or insertion of a bobbin.

In Figs. 1 to 3 I have shown the bobbin-holding spring 9 extended through a hole, m, in the spring 0, the end of the spring 9 nearest the point of the shuttle being pivoted directly upon the tension-spring c by the pin so that the spring 9 may be turned aside about the pivot far enough to remove the lip g from the open end of the shuttle out of the way of the bobbin, if it is desired to remove it from the shuttle.

Instead of pivoting the bobbin holding spring to the tension-sprin g, as so far described, I may weld it directly upon the tension-sprin g c, as represented in Figs. 4, 5, the pin f assisting to secure the weld; but in this modification I prefer to solder that end of the spring 0 nearest the heel of the shell or body directly to the said shell or body.

I am aware that it is not new to provide a bored shuttle with a cross-bar to serve as one i springs being connected and combined tobearing for the bobbin-journal, the said crossbar being held in place by means of a tensionspring loosely or otherwise connected with the shuttle-body; and so, also, I am aware that a tension-spring has had one end provided with a lip to extend over the end of and prevent the escape of the bobbin without supporting the journal at one end of the shuttle-bobbin. In this my invention the bobbin is supported in the shell or body by the peripheries of its rims or heads. acts as usual to control the delivery of the shuttle-thread, and prevent slack to interfere with the needle.

I claim- 1. The bored shell or body a, the tensionspring 0 attached to it, and the screw d, to adjust it to regulate the tension on the shuttlethread, combined with the independent bobbinholding spring provided with a lip, g, to extend just over the end wall of the shell at its heel and retain the bobbin in place, the two The curved part 70 of the tension gether and with the shuttle body or shell, as described, to permit the bobbin to be removed or inserted by a movement only of the bobbinholding spring, the tension-spring not being changed or moved during the operation, substantially as set forth.

2. The bored shell or body a, provided with the open-ended slot, 6, extended along the shell and open through the heel end of the shuttlebody, combined with the spring 0, bent at c, and fitted into the recess M, the adjustingscrew 61, and the independent bobbin-holding spring 9, connected with the spring 0, and provided with the lip 9, all substantially as and for the purpose described.

In testimony whereofI have signed myname to this specification in the presence of two subscribing witnesses.

REUBEN M. ROSE.

Witnesses:

SPENCER O. DOTY, E. V. THOMAS. 

